Question about the extract by mask tool.

Discussion created by sb52191 on Sep 19, 2013
Latest reply on Sep 20, 2013 by todd93
So I'm using the "Extract By Mask" tool to trim a raster dataset down, based on a shapefiles for the Brazilian states. It seems to work fine, however when I compare the pixels extracted for each state, there are a couple that are either left off (not extracted for either of two adjacent states) or extracted twice (for both adjacent states). I'm curious if anyone knows why this is happening? Ideally I'd like to extract pixels no more than once and not leave any off.

Thanks in advance,